How to display sender's image (avatar)?

In order to display sender image go to:Settings and accounts -> General ->Then check the box next to "Sender Image (avatar)".

Please notice that images will only be displayed for: 1. Contacts that exists on your device.2. Exchange: contacts that were synced with your account - if you checked the box next to "sync contacts" (via MailWise). 3. Gmail: contacts that were synced with your account if your Gmail account was added to your device's accounts (via device's properties).